1161326685 has 8 divisors (see below), whose sum is σ = 1858122720. Its totient is φ = 619374224.

The previous prime is 1161326641. The next prime is 1161326701. The reversal of 1161326685 is 5866231611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1161326685 - 2¹⁰ = 1161325661 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38710875 + ... + 38710904.

It is an arithmetic number, because the mean of its divisors is an integer number (232265340).

Almost surely, 2^1161326685 is an apocalyptic number.

1161326685 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1161326685 is a deficient number, since it is larger than the sum of its proper divisors (696796035).

1161326685 is an equidigital number, since it uses as much as digits as its factorization.

1161326685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77421787.

The product of its digits is 51840, while the sum is 39.

The square root of 1161326685 is about 34078.2435726961. The cubic root of 1161326685 is about 1051.1179883369.

The spelling of 1161326685 in words is "one billion, one hundred sixty-one million, three hundred twenty-six thousand, six hundred eighty-five".